Just a really wild guess since I dunno if 255 refers to number of players, color, or other thing in "team=255" but if its 255 players, then it might be the problem.

Or maybe its just coz your server is not recognized by Battletracker?

It sounds stupid but if server is set on a tournanent mode, server will crash after last round, unless color setting in server's aao25.ini is white (255,255,255) and server name doesn't contain any special chars. Color setting affects on such thing as servername color, motd message etc so as long as simple server name is white, it works. Never figured out earlier why the color matters, but simple server name is somewhat reasonable, because after last round in tournament mode results will be saved as txt file at server and if I recall servername will be used in .txt filename and fails to save due to failure in filename. That team=255 would somehow explain, that in tournament mode color needs to be white, but Im afraid that value in log wont tell the reason of crash in this thread

// Server port, default is 1716, also uses port+1 and port+2, 1716+1717 must be opened on router for incoming UDP, 1818 is for internal communication only.// Server also needs to make outgoing UDP connections on 20046,20047 and 27900.// This can also be set using optional command line argument Port=1716// If your server has more than 1 IP address use the multihome option to bind the server to 1 address,// Default is 0.0.0.0 which means listen on all available IP addresses. optional command line argument -multihome=217.146.91.91port=27026multihome=217.146.91.91

// WINDOWS ONLY, Process ID must be unique for each server running on this machine, If you have more than 1 server running// with the same Process ID they will keep crashing each other.// This can also be set using optional command line argument ID=001processid=8746

// Admin password is mandatory, gamepass word is for private servers.// Enter as many player admins lines as you like, one name per line.// playerslots(number of slots), roundsmatch(number of rounds per match), roundlength(minutes per round)adminpassword=t10smgamepassword=playeradmin=player1playeradmin=player2playerslots=20roundsmatch=12roundlength=7

// SERVER INFORMATION, repeatmessage(1 for yes, 0 for no), repeatminutes(minutes)// Server name and messages colour can be set with colour=Red,Green,Blue (0 - 255)servername=AA2.5Assist (Lin) Servermotd1=motd2=motd3=colour=255,255,255adminname=adminemail=Non-disclosedrepeatmessage=0repeatminutes=5

// MAP CYCLING (use maps filename), enablecycling(1 for yes, 0 for no), cyclematches(cycle after x matches)// forcecycle(cycles maps even if no-one is in server), forceminutes(time between forced map cycle)// If you enable map cycling you must enter more than 1 map line below (map filename).map=Pipelineenablecycling=0cyclematches=15forcecycle=0forceminutes=60